140684773 has 4 divisors (see below), whose sum is σ = 140756140. Its totient is φ = 140613408.

The previous prime is 140684723. The next prime is 140684779. The reversal of 140684773 is 377486041.

140684773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 377486041 = 19429².

It can be written as a sum of positive squares in 2 ways, for example, as 116251524 + 24433249 = 10782^2 + 4943^2 .

It is a cyclic number.

It is not a de Polignac number, because 140684773 - 2¹⁷ = 140553701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140684779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32640 + ... + 36697.

It is an arithmetic number, because the mean of its divisors is an integer number (35189035).

Almost surely, 2^140684773 is an apocalyptic number.

It is an amenable number.

140684773 is a deficient number, since it is larger than the sum of its proper divisors (71367).

140684773 is an equidigital number, since it uses as much as digits as its factorization.

140684773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71366.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 140684773 is about 11861.0612088464. The cubic root of 140684773 is about 520.0946240525.

The spelling of 140684773 in words is "one hundred forty million, six hundred eighty-four thousand, seven hundred seventy-three".